
#!/usr/bin/env python3
#-*- coding: utf-8 -*-
from baike_spider import url_manager, html_downloader, html_parser, html_outputer


class SpiderMain(object):

    def __init__(self):#初始化，实例化各个模块
        self.urls = url_manager.UrlManager()#url管理器
        self.downloader = html_downloader.HtmlDownloader()#下载器
        self.parser = html_parser.HtmlParser()#解析器
        self.outputer = html_outputer.HtmlOutputer()#输出器
    def craw(self, root):#调用各个模块进行扒取
        count = 1
        self.urls.add_new_url(root)
        while self.urls.has_new_url():
            try:
                new_url = self.urls.get_new_url()
                print("craw %d : %s" %(count, new_url))
                html_cont = self.downloader.download(new_url)
                new_urls,new_data = self.parser.parse(new_url,html_cont)
                self.urls.add_new_urls(new_urls)
                self.outputer.collect_data(new_data)
                if count>100:
                    break
                count+=1
            except Exception as e:
                print(str(e))
        self.outputer.output_html()


if __name__=='__main__':
    root_url = 'https://baike.baidu.com/item/Python/407313?fr=aladdin'
    obj_spider = SpiderMain()
    obj_spider.craw(root_url)